EP0297856A1 - Fülltrichterkonstruktionen - Google Patents

Fülltrichterkonstruktionen Download PDF

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Publication number
EP0297856A1
EP0297856A1 EP88305920A EP88305920A EP0297856A1 EP 0297856 A1 EP0297856 A1 EP 0297856A1 EP 88305920 A EP88305920 A EP 88305920A EP 88305920 A EP88305920 A EP 88305920A EP 0297856 A1 EP0297856 A1 EP 0297856A1
Authority
EP
European Patent Office
Prior art keywords
baffle
hopper assembly
edge portion
hopper
baffles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88305920A
Other languages
English (en)
French (fr)
Other versions
EP0297856B1 (de
Inventor
Abel Herbet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Enersys Ltd
Original Assignee
BTR Industrial Holdings Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BTR Industrial Holdings Ltd filed Critical BTR Industrial Holdings Ltd
Priority to AT88305920T priority Critical patent/ATE74568T1/de
Publication of EP0297856A1 publication Critical patent/EP0297856A1/de
Application granted granted Critical
Publication of EP0297856B1 publication Critical patent/EP0297856B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
    • B65G69/18—Preventing escape of dust
    • B65G69/185—Preventing escape of dust by means of non-sealed systems
    • B65G69/187—Preventing escape of dust by means of non-sealed systems with non-return closures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32286—Clamping screw traverses sliding complementary arcuate bearing surfaces
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00—Joints and connections
    • Y10T403/32—Articulated members
    • Y10T403/32254—Lockable at fixed position
    • Y10T403/32262—At selected angle
    • Y10T403/32319—At selected angle including pivot stud
    • Y10T403/32327—At selected angle including pivot stud including radially spaced detent or latch component

Definitions

  • the invention relates to hopper assemblies for receiving granular or powder materials.
  • the invention provides a hopper assembly having an upwardly facing mouth for receiving granular or powder materials, and means for assisting in preventing or reducing the escape of material from the hopper, which means comprises at least one resiliently flexible baffle extending obliquely downwards from a substantially fixed, generally horizontally extending top edge portion to a free edge portion, and another member having an edge portion in the vicinity of and extending substantially parallel to the free edge portion of the baffle, the arrangement being such that if material to be received by the hopper assembly falls onto the baffle its weight tends to cause the baffle to deflect away from the said other member, permitting the material to fall between the baffle and the other member, and that the baffle then returns or tends to return to its original position.
  • the term "hopper assembly” is to be understood as including any structure for receiving materials poured into it, and not limited to structures in which a reserve of the material is kept immediately below the mouth and from which the material is extracted by gravity.
  • the said other member may be another resiliently flexible baffle extending obliquely downwards from a substantially fixed, generally horizontally extending top edge portion to a free edge portion in the vicinity of and extending substantially parallel to the free edge portion of the first-mentioned baffle.
  • the hopper assembly then advantageously comprises two rows of resiliently flexible baffles forming a substantially symmetrical array of generally V-shaped vertical cross-­section, with the free edge portions of the baffles along the centre of the array and the top edge portions of the baffles along the sides of the array. If there are two said arrays of baffles side by side, they are advantageously separated by a common supporting member to which the adjacent top edge portions of the baffles of both arrays are fixed. If there are more than two such arrays, then each array (except for the two outermost) may share a common supporting member with those on both sides of it.
  • the hopper assembly may comprise means for adjusting the angle of obliquity, with respect to the horizontal, of the fixed edge portion of the baffle or baffles.
  • the fixed edge portion of the or each baffle is then advantageously mounted pivotably about a horizontal axis, and adjustable means provided for enabling the baffle to be prevented from pivoting under the action of gravity from any of a range of angular poitions about the axis of pivoting.
  • the pivotal positions of the baffle is preferably determined by the effective length of one or more bolts extending between the baffle and a fixed member and so arranged that adjustment can be effected by screwing a nut along each such bolt.
  • the or each baffle may be so mounted as to permit adjustment of the distance from the axis of pivoting to the free edge.
  • the fixed edge portion of the baffle is mounted in a support member which is shaped to permit restricted pivotal movement of the baffle about a horizontal axis and means is provided for securing the baffle in a desired pivotal position.
  • the fixed edge portion of the baffle may be shaped to form a cylindrical support portion and the support member may be a tube in which the support portion is located, the baffle extending from the tube through a slot in the wall of the tube.
  • baffles are adjustably mounted, they can be set to a desired setting when they are installed and will usually need only occasional adjustment, so that any tendency for the adjusting means to clog with dust will not hinder the day-to-day operation of the baffles.
  • Means may be provided for extracting air from below the said at least one baffle.
  • the or each resiliently flexible baffle may comprise a sheet of elastomeric material.
  • the or each baffle may comprise an upper layer of wear-resistant material and a lower layer of resilient material.
  • the baffle may comprise a sheet of material with stiffening ribs on one surface.
  • the baffle may be moulded in one piece from a elastomeric material.
  • the invention also provides a kit of parts for a hopper assembly according to the invention, comprising a resiliently flexible baffle and means for fixing the baffle to a fixed member of the hopper assembly.
  • the kit preferably includes the adjusting means and a mounting that is to be fastened to some fixed part of the hopper assembly to provide an anchorage for the baffles and the adjusting means.
  • the kit may provide the components necessary for converting an existing receiving hopper assembly into a hopper assembly according to the invention.
  • one form of hopper assembly includes a receiving hopper 20 (not shown in detail) disposed under an opening in a floor 1a which opening is spanned by a plurality of beams 1 and forms a mouth for the hopper assembly.
  • the beams 1 are I-beams with their lower flanges prismatic to prevent material from piling up on the flanges.
  • the spaces between the beams 1 are covered by grids 2 resting on the beams 1.
  • the grids 2 have been omitted from Fig. 1 for clarity.
  • the beams 1 and grids 2 support the weight of lorries that may drive over the hopper, while permitting granular or powder materials discharged by the lorries to fall through the grids into the hopper.
  • the beams 1 and grids 2 may be conventional and will not be described in detail.
  • brackets 3 extending the length of the beams.
  • Each bracket 3 has vertical pivot plates 4 projecting from it at both sides of the opening and at regular intervals in between.
  • a mounting member 6 having at each end a downwardly-projecting lug 7 that is pivotably attached to the adjacent pivot plate 4 by means of a bolt 8.
  • Each mounting member 6 is bent downwards at the edge portion further from the bracket 3.
  • a bolt 9 extends generally vertically through a hole 10 in each lug 5 and a hole 11 in the mounting member 6 above, terminating above the mounting member in a head 12 in the form of a crossbar of a circular section and having a nut 13 screwed onto it below the lug 5.
  • Each mounting member 6 has on it a flap 14 in the form of a sheet of resilient material approximately as long as the mounting member.
  • the flaps 14 may overhang the pivot plates 4 in order to abut one another closely end to end, and if they do so then the mounting members 6 will not necessarily do the same.
  • the flap 14 and the seal plate 15 are secured to the mounting plate 6 by several bolts 16 that pass through holes in the flap and transverse slots 17 in the mounting member and the seal plate.
  • Each flap 14 is a laminate of a lower layer of elastomeric material giving a desired stiffness and flexibility to the flap, and a thinner upper layer of material that has a higher wear resistance than the elastomeric material but would not on its own be stiff enough.
  • the support members 6 and flaps 14 are positioned with the flaps sloping downwards towards their free sides, and the free side edge of each flap, in a resting condition, being closely adjacent to that of the flap opposite on the facing side of the next beam 1.
  • the flaps 14 are held in their sloping position by the bolts 9 acting in tension between the horizontal lugs 5 and the support members 6, and their angle can be adjusted by loosening or tightening the nuts 13.
  • the positions of the flaps 14 can also be adjusted by sliding the bolts 16 up or down the slots 17.
  • the interior of the receiving hopper is maintained under a pressure lower than ambient pressure by fans (not shown), which draw dust-­laden air continuously from the interior of the hopper through ducts 18 and filters (not shown). Because air is withdrawn from within the hopper, there is a flow of air into the hopper between the free side edges of the flaps 14. The position of the flaps 14 is so set, by tightening or loosening the nuts 13 on the bolts 9 and by moving the bolts 16 up or down the slots 17, that any appreciable additional weight on the flaps causes them to deflect and to gape apart at their free sides, as shown in Fig.
  • the beams 1 may be spaced about 1 metre apart, the pivot plates 4 may be spaced about 70 cm apart, the flaps 14 may be about 40 cm wide in a direction perpendicular to the lengths of the beams 1 and the mounting members 6 may be about 20 cm wide.
  • the flaps 14 may consist of an upper layer of 7 mm thick polyester-reinforced conveyor-belt rubber and a lower layer of 10 mm thick natural rubber such as that sold in France by Kleber under the designation "Feuille CV", having a DIDC hardness of 40.
  • the number of beams 1 employed depends on the dimensions of the hopper and, for any particular hopper, can be varied to some extent. If fewer beams are employed, the distance between them increases and the flaps 14, if set at the same angle, will then penetrate more deeply into the hopper. If the flaps 14 penetrate too deeply into the hopper they will reduce the capacity of the hopper and there will also be a risk that they will contact the material within the hopper; the spacing between the beams 1 should, of course, be selected to ensure that that does not occur.
  • Figs. 5 and 6 show another form of resiliently - flexible flap 14.
  • the flap includes a support portion 20 along one edge and stiffening ribs 21 on one surface (in use, the undersurface) and is moulded in one piece from an elastomeric material, for example polyurethane.
  • the support portion 20 has a circular cross-section and, running the length of the support portion, is a groove 22 of V-shaped cross-section. The mouth of the groove is directed away from the flap and along each edge of the mouth is an outwardly-directed lip 23.
  • the thickness of the flap adjacent the support portion 20 is substantially less than the diameter of the cross-section of the support portion and it decreases steadily towards the opposite end of the flap.
  • the stiffening ribs 21 extend from the support portion 20 towards the opposite end of the flap and decrease steadily in height.
  • the flap is mounted by a bracket 24 (Figs. 7 and 8) on one of the I-beams 1 that span the mouth of the hopper (Figs. 1 to 3).
  • the bracket 24 comprises a rectangular plate 25 which in use is secured to the side of a beam and to which is welded a tube 26 which extends the length of the plate 25.
  • a comparatively wide slot 27 is cut in the wall of the tube and extends the length of the tube.
  • the support portion 20 of the flap is located in the tube 26 so that the flap 14 projects through the slot 27 and extends obliquely downwards as shown in Fig. 8.
  • the lips 23 on the support portion 20 are deflected by engagement with the internal surface of the tube and ensure that the support portion is a comparatively secure fit within the tube.
  • the width of the slot 27 allows the angle of the flap to be adjusted to a limited extent, following which the flap is secured in position by bolts or pins 28 driven into the support portion 20 of the flap through apertures 29 formed at intervals along the tube 26.
  • the ends of the tube 26 are closed by end pieces 30 to prevent the entry of particulate material that may be poured through the mouth of the hopper or of dust from that material.
  • the free end of the flap lies closely adjacent to that of the flap on the facing side of the next beam.
  • the use of a comparatively soft material, such as rubber or polyurethane, for the flaps 14 reduces the extend to which particles of material rebound from the surfaces of the flaps when the material is being poured into the hopper and assists in preventing the formation of dust at the hopper mouth.
  • the beams 1 and grids 2 have been described as supporting the weight of lorries, it will be appreciated that if that is not to occur, for example, because delivery is to be by railway wagons the weight of which is supported on tracks, or because the receiving hoppers are so arranged that lorries back up to them and cannot drive over them, grids of a lighter construction may be used. Railway tracks may be supported on the beams 1. It is still preferred, however, to provide grids that will prevent personnel from falling into the hoppers.
  • the overall dimensions of the receiving hopper are largely a matter of the design of the individual installation, and that the optimum length, width, thickness, elastic properties, and setting of the flaps 14 may vary widely depending on the material that the hopper is to receive.
EP88305920A 1987-06-30 1988-06-29 Fülltrichterkonstruktionen Expired - Lifetime EP0297856B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88305920T ATE74568T1 (de) 1987-06-30 1988-06-29 Fuelltrichterkonstruktionen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8715364 1987-06-30
GB878715364A GB8715364D0 (en) 1987-06-30 1987-06-30 Hopper assemblies

Publications (2)

Publication Number Publication Date
EP0297856A1 true EP0297856A1 (de) 1989-01-04
EP0297856B1 EP0297856B1 (de) 1992-04-08

Family

ID=10619837

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88305920A Expired - Lifetime EP0297856B1 (de) 1987-06-30 1988-06-29 Fülltrichterkonstruktionen

Country Status (6)

Country Link
US (1) US4942911A (de)
EP (1) EP0297856B1 (de)
AT (1) ATE74568T1 (de)
AU (1) AU619471B2 (de)
DE (1) DE3869843D1 (de)
GB (1) GB8715364D0 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2270683A (en) * 1992-09-17 1994-03-23 Aaf Ltd Hopper dust containment filler.
AT848U1 (de) * 1994-11-02 1996-06-25 Plohberger Johann Einschüttgosse
ES2120865A1 (es) * 1995-06-28 1998-11-01 Lopez Rubio Santos Perfeccionamientos en la construccion de tolvas para la descarga de material a granel.
FR2772735A1 (fr) * 1997-12-18 1999-06-25 Michel Vidal Procede d'aspiration des poussieres generees lors de l'operation de dechargement d'une matiere particulaire et dispositif permettant de le mettre en oeuvre
ES2212718A1 (es) * 2002-05-21 2004-07-16 Taller Mecanico Manuel Silva, S.A. Tolva para descarga de productos a granel.
KR100524610B1 (ko) * 2000-12-26 2005-11-02 주식회사 포스코 슈트의 호울 개폐장치
KR100770320B1 (ko) * 2001-09-03 2007-10-26 주식회사 포스코 하역용 호퍼의 분진 차단장치

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5989469A (en) * 1997-09-11 1999-11-23 Knight Plastics, Inc. Method for making a non-drip valve for an inverted container
US5931352A (en) * 1997-09-11 1999-08-03 Knight Plastics, Inc. Snap-fit non-drip valve and method for assembly thereof
US5893399A (en) * 1997-12-22 1999-04-13 Agricultural Building Company Mechanism for reducing emissions of dust from grain bins
AUPP613098A0 (en) * 1998-09-24 1998-10-15 Brian Investments Pty Ltd A dust retention system
US7128104B1 (en) * 2003-12-09 2006-10-31 Haraway Coy N Receiving pit dust control device and method of use
US8256355B2 (en) 2011-02-07 2012-09-04 Coalcap, Llc Cover system for open top rail cars
CN110723568B (zh) * 2019-11-25 2020-12-29 秦皇岛港股份有限公司 用于抑尘的配重可调式自平衡装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935553A1 (de) * 1969-07-12 1971-01-21 Stahlgruber Gruber & Co Otto Selbstschliessende Staubschutzvorrichtung
DE2525703A1 (de) * 1975-06-10 1976-12-23 Schmidt Geb Vorrichtung zum entstauben einer annahmegosse fuer schuettgueter, insbesondere getreide

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GB600237A (en) * 1946-01-04 1948-04-02 Desmond Walter Molins Improvements in or relating to tobacco manipulating machines
US2761186A (en) * 1952-04-24 1956-09-04 Edwin F Peterson Blow tube for core blowing machine
DE1022084B (de) * 1953-07-09 1958-01-02 Linderoths Patenter Ab Austragschleuse fuer unter Unterdruck stehende Staubabscheider
GB921010A (en) * 1958-08-27 1963-03-13 Dunlop Rubber Co Antibreakage device for colliery skips
US3365240A (en) * 1967-05-04 1968-01-23 Gordon Mack Valve control for discharge of finely divided material from vacuum to atmosphere
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US4324524A (en) * 1979-02-12 1982-04-13 Barrett Burston (Australia) Limited Dust retention device
AU541759B2 (en) * 1979-02-12 1985-01-17 Barrett Burston (Aust) Ltd. Dust retention device when discharging particulate material
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Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1935553A1 (de) * 1969-07-12 1971-01-21 Stahlgruber Gruber & Co Otto Selbstschliessende Staubschutzvorrichtung
DE2525703A1 (de) * 1975-06-10 1976-12-23 Schmidt Geb Vorrichtung zum entstauben einer annahmegosse fuer schuettgueter, insbesondere getreide

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2270683A (en) * 1992-09-17 1994-03-23 Aaf Ltd Hopper dust containment filler.
AT848U1 (de) * 1994-11-02 1996-06-25 Plohberger Johann Einschüttgosse
ES2120865A1 (es) * 1995-06-28 1998-11-01 Lopez Rubio Santos Perfeccionamientos en la construccion de tolvas para la descarga de material a granel.
FR2772735A1 (fr) * 1997-12-18 1999-06-25 Michel Vidal Procede d'aspiration des poussieres generees lors de l'operation de dechargement d'une matiere particulaire et dispositif permettant de le mettre en oeuvre
KR100524610B1 (ko) * 2000-12-26 2005-11-02 주식회사 포스코 슈트의 호울 개폐장치
KR100770320B1 (ko) * 2001-09-03 2007-10-26 주식회사 포스코 하역용 호퍼의 분진 차단장치
ES2212718A1 (es) * 2002-05-21 2004-07-16 Taller Mecanico Manuel Silva, S.A. Tolva para descarga de productos a granel.

Also Published As

Publication number Publication date
AU1856988A (en) 1989-01-12
GB8715364D0 (en) 1987-08-05
EP0297856B1 (de) 1992-04-08
US4942911A (en) 1990-07-24
ATE74568T1 (de) 1992-04-15
AU619471B2 (en) 1992-01-30
DE3869843D1 (de) 1992-05-14

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